#include <stdio.h>
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
//#include <FL/Fl_Button.H>
#include <Button.h>
#include <FL/Fl_Progress.H>

//
// "$Id: progress-simple.cxx 9256 2012-02-29 05:42:12Z greg.ercolano $"
//
// Demonstrate using the Fl_Progress widget in an application - erco 05/02/2005
//
// Copyright 2005,2012 Greg Ercolano.
// Copyright 1998-2012 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//

#ifdef WIN32
// WINDOWS
#include <windows.h>
#define usleep(v) Sleep(v/1000)
#else /*WIN32*/
// UNIX
#include <unistd.h>                            // usleep
#endif /*WIN32*/

#pragma comment(lib, "fltk-helpmate")

// Button callback
//void butt_cb(Fl_Widget* butt, void* data) {
void butt_cb(Button* butt) {

	// Deactivate the button
	butt->deactivate();                        // prevent button from being pressed again                   
	Fl::check();                               // give fltk some cpu to gray out button
	// Make the progress bar
	//Fl_Window* w = (Fl_Window*)data;           // access parent window
	Fl_Window* w = butt->parent()->as_window();           // access parent window
	w->begin();                                // add progress bar to it..
	Fl_Progress* progress = new Fl_Progress(10, 50, 200, 30);
	progress->minimum(0);                      // set progress range to be 0.0 ~ 1.0
	progress->maximum(1);
	progress->color(0x88888800);               // background color
	progress->selection_color(0x4444ff00);     // progress bar color
	progress->labelcolor(FL_WHITE);            // percent text color
	w->end();                                  // end adding to window
	// Computation loop..
	for (int t = 1; t <= 500; t++) {
		progress->value(t / 500.0);              // update progress bar with 0.0 ~ 1.0 value
		char percent[10];
		sprintf(percent, "%d%%", int((t / 500.0) * 100.0));
		progress->label(percent);              // update progress bar's label
		Fl::check();                           // give fltk some cpu to update the screen
		usleep(1000);                          // 'your stuff' that's compute intensive
	}
	// Cleanup
	w->remove(progress);                       // remove progress bar from window
	delete(progress);                          // deallocate it
	butt->activate();                          // reactivate button
	w->redraw();                               // tell window to redraw now that progress removed
}
// Main
int main() {
	Fl_Window win(220, 90);
	//Fl_Button butt(10, 10, 100, 25, "Press");
	Button butt(10, 10, 100, 25, "Press");
	//butt.callback(butt_cb, &win);
	butt.eventClicked.addListener(butt_cb);
	win.resizable(win);
	win.show();
	return(Fl::run());
}

//
// End of "$Id: progress-simple.cxx 9256 2012-02-29 05:42:12Z greg.ercolano $".
//
